Relax you don't have to match
Fortunately you are now at the point to purchase the sub. The sub does not have to "match" the rest of your speakers. Also keep in mind that the sub is an extremely important component in your setup. Since the sub produces the lower frequency sounds it is in and of itself the speaker that produces the lower end. Therefore trying to match your existing set of speakers is not important. You don't have to worry about "Timbre Matching" them.
What you need to do is try to match the size of the sub to the size of your speakers. If you have larger speakers, then it is a little easier to go with a larger sub. If you have mid size to smaller speakers it will be a little harder to blend in a massive sub.
Believe me coming from a passive Kenwood sub to my Velodyne was like coming into the light from the dark. The difference is astounding. I also have the RX-V2500 running my system; it handles bass management extremely well. You will want to get the specs on your other speakers and set the crossover after you know what the lowest frequency that your current speakers will go.
I am sure that you will get a lot of good input from the folks here.
I can certainly tell you I was, and still am blown away with my Velodyne DLS-3750R. I can not tell you how much bass this thing puts out. Really I cant tell you, it has a remote control and I have it turned down, I am guessing I normally keep it about a third of the way up and all sorts of things in the house shake. Not from distortion or anything like that just good low frequency sound.
Do yourself a favor and when you purchase a sub, make sure and do 2 things (Other than getting a great sub). 1. Get a good brand sub cable and 2. Get a Y cable and hook it up to both the L & R inputs on the input part of the sub. It does make a difference.
Hope this helps you out. Good luck and enjoy.
